Wars, politics & history

Second Northern War

from 1655 to 1660

The Second Northern War, also called the Northern Wars of 1655-1660, was fought across the Baltic region, started when Charles X Gustav of Sweden invaded the Polish-Lithuanian Commonwealth, an event known in Poland as the Deluge. Swedish armies overran much of Poland and Lithuania, including Warsaw and Krakow, but a national uprising and intervention by Russia, Brandenburg, Austria and Denmark turned the tide. Charles then led his army across the frozen Danish belts and forced Denmark to cede territory at the Treaty of Roskilde. The war ended with a series of treaties at Oliva and Copenhagen, which confirmed Sweden's gains on the Scandinavian side, including Scania, but left Poland badly weakened and strengthened Brandenburg-Prussia.

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